BEGIN;
BEGIN
select
	c_count,
	count(*) as custdist
from
	(
		select
			c_custkey,
			count(o_orderkey)
		from
			customer left outer join orders on
				c_custkey = o_custkey
				and o_comment not like '%special%requests%'
		group by
			c_custkey
	) as c_orders (c_custkey, c_count)
group by
	c_count
order by
	custdist desc,
	c_count desc;
 c_count | custdist 
---------+----------
       0 |   500019
      10 |    66314
       9 |    65107
      11 |    62058
       8 |    58361
      12 |    55948
      13 |    49669
      19 |    46728
       7 |    46367
      18 |    46245
      17 |    45153
      14 |    45131
      20 |    45120
      15 |    43904
      16 |    43818
      21 |    42440
      22 |    37822
      23 |    32723
       6 |    32714
      24 |    26858
      25 |    21129
       5 |    19747
      26 |    16074
      27 |    11825
       4 |     9793
      28 |     8255
      29 |     5661
       3 |     4065
      30 |     3721
      31 |     2354
      32 |     1543
       2 |     1168
      33 |      860
      34 |      502
      35 |      276
       1 |      227
      36 |      137
      37 |       73
      38 |       45
      39 |       21
      40 |       13
      42 |        4
      41 |        3
      44 |        2
      43 |        2
      45 |        1
(46 rows)

COMMIT;
COMMIT